Results 21 to 30 of about 39,281 (265)

The biosynthesis of cholesterol in the developing chick embryo*

open access: yesJournal of Lipid Research, 1962
Mevalonic acid-2-C14 was injected into the yolk of incubating fertile hens' eggs on the sixth day of incubation. A nonsaponifiable fraction (NSF) containing labeled components was isolated from the yolk sac and from the embryo throughout the remainder of
Pat W. Camerino, Lemuel D. Wright
doaj   +1 more source

Influences of Salinity on Embryonic and Larval Development of Striped Catfish Pangasianodon hypophthalmus

open access: yesFrontiers in Marine Science, 2021
Salinity intrusion in coastal areas due to climate change is alarming. In this study, the effects of salinity on embryonic and larval development of striped catfish (Pangasianodon hypophthalmus) were studied experimentally.
Farzana Hossain   +6 more
doaj   +1 more source

Bacterial Contamination in the Components of the Chickens' Eggs

open access: yesThe Iraqi Journal of Veterinary Medicine, 2020
In 120 hen eggs ( local eggs , hatching eggs and table eggs ) a bacteriological pollution with high rate was observed by isolating 427 bacterial isolates from which 199 isolates related to the egg's shell , 117 isolates related to albumen sac, and 111 ...
S. A. Abed
doaj   +1 more source

Size and Shape of yolk sac as a predictor of pregnancy outcome [PDF]

open access: yesEgyptian Journal of Medical Research, 2022
Background: it is estimated that approximately 30% to 40% of implanted pregnancies resulted in spontaneous abortion during the first trimester, most of which occur in very early stage.
Merehan Hewidy   +2 more
doaj   +1 more source

Transport of maternal LDL and HDL to the fetal membranes and placenta of the Golden Syrian hamster is mediated by receptor-dependent and receptor-independent processes

open access: yesJournal of Lipid Research, 1998
Maternal lipoproteins provide nutrients to the fetus via the placenta, yolk sac, and uterine membrane plus decidua. To determine the transport processes that are responsible for the removal of lipoproteins from the maternal circulation, we measured the ...
Kathleen L. Wyne, Laura A. Woollett
doaj   +1 more source

Yolk sac tumor of cryptorchid testis diagnosed by fine needle aspiration cytology

open access: yesJournal of Cytology, 2015
Yolk sac tumor is the most common germ cell tumor in infants and children. Majority of them arise in the gonads. Yolk sac tumor of undescended testis has been rarely diagnosed.
Monisha Choudhury   +3 more
doaj   +1 more source

Gluconeogenesis in the Yolk Sac Membrane: Enzyme Activity, Gene Expression, and Metabolites During Layer Chicken Development

open access: yesThe Journal of Poultry Science, 2023
Yolk sac membranes of layer eggs were collected daily (n = 7–9) from day three of incubation to day three post-hatch, and mRNA expression and activities were quantified for key gluconeogenesis enzymes (glucose-6-phosphatase, fructose-1 ...
Mitsuhiro Shibata   +2 more
doaj   +1 more source

Ferritin‐Doped Nanoparticles Triggered Tumor‐Specific Darkening for Enhanced Photothermal Tumor Ablation and Immune Activation

open access: yesAdvanced Healthcare Materials, EarlyView.
Ferritin‐doped hybrid nanoparticles triggered accurate tumor‐specific hemorrhage for enhanced in situ photothermal therapy and evoked anti‐tumor immunity. Notably, HFn/GA‐Fe specifically induced tumor hemorrhage 12 h after intravenous injection, resulting in visible color darkening. Through photoacoustic imaging, tumor vessels could be clearly observed
Haidong Zha   +7 more
wiley   +1 more source

Yolk Sacs in Twin Pregnancy [PDF]

open access: yesActa geneticae medicae et gemellologiae: twin research, 1998
AbstractOBJECTIVE. The purpose of this study was to evaluate the relationship between the yolk sacs separated or not separated by septum and chorionicity twin pregnancies scanned early in the first trimester, and the relation between size and morphologic features of the yolk sac and the outcome of twin pregnancies.RESULTS.
openaire   +3 more sources

Evaluation of the Dual Impact of Nanotechnologies on Health and Environment Through Alternative Bridging Models

open access: yesAdvanced Healthcare Materials, EarlyView.
This review explores how alternative invertebrate and small‐vertebrate models advance the evaluation of nanomaterials across medicine and environmental science. By bridging cellular and organismal levels, these models enable integrated assessment of toxicity, biodistribution, and therapeutic performance.
Marie Celine Lefevre   +3 more
wiley   +1 more source

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